diff options
Diffstat (limited to 'src/compiler/scala/tools/nsc')
| -rw-r--r-- | src/compiler/scala/tools/nsc/transform/Erasure.scala | 38 | ||||
| -rw-r--r-- | src/compiler/scala/tools/nsc/typechecker/RefChecks.scala | 2 |
2 files changed, 22 insertions, 18 deletions
diff --git a/src/compiler/scala/tools/nsc/transform/Erasure.scala b/src/compiler/scala/tools/nsc/transform/Erasure.scala index 7a06c0cf2c..6b987f0089 100644 --- a/src/compiler/scala/tools/nsc/transform/Erasure.scala +++ b/src/compiler/scala/tools/nsc/transform/Erasure.scala @@ -411,7 +411,15 @@ abstract class Erasure extends AddInterfaces override def newTyper(context: Context) = new Eraser(context) class ComputeBridges(unit: CompilationUnit, root: Symbol) { - assert(phase == currentRun.erasurePhase, phase) + + class BridgesCursor(root: Symbol) extends overridingPairs.Cursor(root) { + override def parents = List(root.info.firstParent) + // Varargs bridges may need generic bridges due to the non-repeated part of the signature of the involved methods. + // The vararg bridge is generated during refchecks (probably to simplify override checking), + // but then the resulting varargs "bridge" method may itself need an actual erasure bridge. + // TODO: like javac, generate just one bridge method that wraps Seq <-> varargs and does erasure-induced casts + override def exclude(sym: Symbol) = !sym.isMethod || super.exclude(sym) + } var toBeRemoved = immutable.Set[Symbol]() val site = root.thisType @@ -419,12 +427,7 @@ abstract class Erasure extends AddInterfaces val bridgeTarget = mutable.HashMap[Symbol, Symbol]() var bridges = List[Tree]() - val opc = enteringExplicitOuter { - new overridingPairs.Cursor(root) { - override def parents = List(root.info.firstParent) - override def exclude(sym: Symbol) = !sym.isMethod || super.exclude(sym) - } - } + val opc = enteringExplicitOuter { new BridgesCursor(root) } def compute(): (List[Tree], immutable.Set[Symbol]) = { while (opc.hasNext) { @@ -811,6 +814,16 @@ abstract class Erasure extends AddInterfaces } } + private class DoubleDefsCursor(root: Symbol) extends Cursor(root) { + // specialized members have no type history before 'specialize', causing double def errors for curried defs + override def exclude(sym: Symbol): Boolean = ( + sym.isType + || super.exclude(sym) + || !sym.hasTypeAt(currentRun.refchecksPhase.id) + ) + override def matches(lo: Symbol, high: Symbol) = !high.isPrivate + } + /** Emit an error if there is a double definition. This can happen if: * * - A template defines two members with the same name and erased type. @@ -821,21 +834,12 @@ abstract class Erasure extends AddInterfaces */ private def checkNoDoubleDefs(root: Symbol) { checkNoDeclaredDoubleDefs(root) - object opc extends Cursor(root) { - // specialized members have no type history before 'specialize', causing double def errors for curried defs - override def exclude(sym: Symbol): Boolean = ( - sym.isType - || super.exclude(sym) - || !sym.hasTypeAt(currentRun.refchecksPhase.id) - ) - override def matches(lo: Symbol, high: Symbol) = !high.isPrivate - } def isErasureDoubleDef(pair: SymbolPair) = { import pair._ log(s"Considering for erasure clash:\n$pair") !exitingRefchecks(lowType matches highType) && sameTypeAfterErasure(low, high) } - opc.iterator filter isErasureDoubleDef foreach doubleDefError + (new DoubleDefsCursor(root)).iterator filter isErasureDoubleDef foreach doubleDefError } /** Add bridge definitions to a template. This means: diff --git a/src/compiler/scala/tools/nsc/typechecker/RefChecks.scala b/src/compiler/scala/tools/nsc/typechecker/RefChecks.scala index 3b2e07bdbd..0b44566108 100644 --- a/src/compiler/scala/tools/nsc/typechecker/RefChecks.scala +++ b/src/compiler/scala/tools/nsc/typechecker/RefChecks.scala @@ -193,7 +193,7 @@ abstract class RefChecks extends InfoTransform with scala.reflect.internal.trans def varargBridge(member: Symbol, bridgetpe: Type): Tree = { log(s"Generating varargs bridge for ${member.fullLocationString} of type $bridgetpe") - val newFlags = (member.flags | VBRIDGE | ARTIFACT) & ~PRIVATE + val newFlags = (member.flags | VBRIDGE) & ~PRIVATE val bridge = member.cloneSymbolImpl(clazz, newFlags) setPos clazz.pos bridge.setInfo(bridgetpe.cloneInfo(bridge)) clazz.info.decls enter bridge |